Enaivieler s apparatus



(No Model.)

S. D. KEENE.

BNAMELERS APPARATUS fl kn in FHIIIIII IIL |l alllll v Patented Oct. 15, 1889.

INVENTD I Jamaal J, fiana. Z .fiwmizwmiz v fig/y WITNEEEEEI- UNITED STATES Parent Fries.

SAMUEL D. KEENE, OF PROVIDENCE, RI-IODE ISLAND, ASSIGNOR TO THE ARNOLD (K7 BARBER SPOOL AND BOBBIN COMPANY, OF KILLINGLY,

CONNECTICUT.

ENAMELERS APPARATUS.

SPECIFICATION forming part of Letters Patent No. 412,853, dated October 15, 1889.

Application filed June 11, 1888.

To all whom it may concern:

Be it known that I, SAMUEL D. KEENE, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Enamelers Apparatus and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a partof this specification.

This invention relates to apparatus used by enamelers in coating bobbins (or other analogous articles) with Japan varnish; and it consists, essentially, of a holder formed of wire bent to receive the bobbin and retain it in position, and means for automatically releasing the bobbin from the holder.

The object of my invention is to provide enamelers with improved means for holding bobbins, &c., whereby the work when placed thereon is adapted to be simultaneously dipped into the enameling compound and then inserted within a properly-heated oven and baked, after which the bobbins are simultaneously released from the holders by simply depressing the free ends of the several wires, all as will be more fully hereinafter set forth and claimed.

I-Ieretofore, so far as I am aware, it has been the practice in enameling bobbins and similar articles to retain them in position either by sticking them upon pins, or by placing the work upon suitably mounted wedgeshaped thin metal plates. The disadvantages resulting from these methods are that a great deal more time is consumed in attaching the bobbins to the holders and removing them therefrom. In addition to the objection just named, the coated bobbins resting upon the wedge-shaped plates shrink unequally during the baking process, thereby causing many of them to become elliptical in form and practically useless. By means of my invention, however, the foregoing objections are wholly or in a great measure overcome, the bent Serial No. 276,724. (No model.)

wire holders at the same time readily permitting the bobbins to shrink uniformly.

In the accompanying sheet of drawings, Figure 1 represents a side elevation (reduced) of a series of my improved holders secured to a metal base or plate. Fig. 2 is a partial plan view of the same. Fig. 3 is an enlarged (or full size) end View in elevation, showing a bobbin retained in position upon one of the spring-holders, and also showing the normal position of a' holder when unconfined by a bobbin. Fig. 4 is a similar view showing the holder slightly modified and having a bobbin thereon. Fig. 5 is a view of the latter holder, carrying a bobbin adapted to receive a still different form of spindle. Fig. 6 is a reduced view of the holder having straight sides adapted to frictionally engage the interior of a bobbin; and Fig. 7 is a reduced side view showing a vertically-mounted wedge-shaped piece of thin metal as usually constructed and arranged, a bobbin resting thereon preparatory to being enameled or dipped.

The manner of constructing and operating my improved holder is substantially as follows:

B, referring to the drawings, designates the holder proper, the same being preferably made of a piece of spring-wire. In Fig. 3 the wire extends upwardly and is bent at c" to form a return leg, which projects downwardly to a point near the end, where a short bend c is made therein. The wire, after extending downwardly a short distance farther, is bent outwardly at right angles to form the wellrounded projecting free end a. (See also Fig. The two sides or legs are slightly curved outwardly, as at c, to bear against the side of the spindle-hole formed in the'bobbins b. In said Fig. 3 the bobbin is provided near its base with an interior annular groove 5 adapted to engage a pin or hook to prevent the bobbin from moving longitudinally when in use, as in weaving, &c. I utilize said groove to receive the bend 0 thereby both gaging and retaining the bobbin in position upon the holder, as clearly shown.

a indicates a strip of sheet metal having a sufficient length to receive, say, thirty holders, the latter preferablybeing placedstaggering (see Fig. 2) and riveted at intervals near each edge, thus forming two rows of holders.

In Figs. 4 and 5 the base of the bobbin is provided with an exterior groove b adapted, when placed in a shuttle, to receive a pin or hook, substantially as just described with reference to the groove 5 It will be observed that the spindle-holes of the two bobbins shown in Figs. 4 and 5 are unlike, the same also being somewhat different from that represented in Fig. 3. In order to retain the former bobbins in position, the legs of the holder B are bent in two places, as at c 0 to bear against the sides of the spindle-hole, as clearly shown. Near the lower end of the stationary leg the wire is bent outwardly, at d, to form a stop or gage, against which the base of the bobbin is adapted to rest, the free end of the wire being oppositely bent to produce an extension 0, substantially as hereinbefore stated.

In Fig. 6 the legs of the wire holder B are shown straight. I prefer, however, the forms of holder represented in the preceding figures.

I would state that there are some two hundred styles of bobbins manufactured, each maker of bobbins as a rule adopting different forms therefor, both externally and internally. Owing to this lack of uniformity in the bobbins, my spring-holder is peculiarly adapted to retain them while undergoing the enameling process. In baking the enamel the holder yields sufliciently to permit the bobbin to shrink equally thereon an obvious advantage over the rigid plate used for the purpose. (Shown in Fig. 7.)

Assuming, now, that a multiple retainer or frame A is provided with a series of holders B, constructed and arranged substantially as hereinbefore described, the operation of enameling bobbins or other hollow articles adapted to be placed thereon would be as follows: The retainer A is first placed upon a suitable support. Then the bobbins b are rapidly pressed over the spring holders, either by hand or mechanically, the small ends a at the same time readily permitting their insertion. The enameler next lifts and inverts the retainer and dips-the bobbins (or articles mounted thereon to be enameled) into a tank containing Japan varnish. He next withdraws them therefrom and, after removing the surplus varnish from the bobbins, places the whole into a suitably prepared and heated oven or furnace to be baked. When the bobbins are thus sufficiently hardened, the retainer is removed from the oven and (unless another coat of varnish is to be applied) each row of bobbins'is successively and automatically released (the retainer being still inverted) by pressing the several projecting ends 0. of the holders against a conveniently -arranged surface or vertical edge. Bymeans of this movement the free ends of the holders are forced inwardly, (see arrow direction,) thereby contracting the sides or legs together and releasing them from the spindle-holes, thus allowing the bobbins to fall from the holders by gravity.

It is obvious that the proportions of the holders must be in a great measure necessarily changed to conform to such hollow articles as are to be enameled thereon. The number and arrangement of the holders, as well as the manner of securing them to the base a, may be modified from the plan represented without departing from the spirit of the invention.

Having thus described my invention, what I claim asnew, and desire to secure by United States Letters Patent, is I 1. The improved holder for enamelers use, consisting of a piece of bent metal arranged to frictionally engage the interior surface of a bobbin or other article to be enameled, and having the free end of the wire terminating in a pusher, as 6, formed by bending the free end of the wire in an outward direction, substantially as shown and set forth.

2. The enamelers apparatus hereinbefore described, consisting of a base portion, as a, having a series of bent wire holders secured thereto, said holders being each provided with a pusher, as e, and a stop for limiting the position of the bobbin, substantially as shown and set forth.

3-. The combination, with a base or support, of the wire holders B, secured thereto, each having two spring-arms which are bent, as at c c c, to engage the interior surface of a bobbin, and being further bent contiguous to said base to form a stop and pusher, as d and 6, respectively, substantially as shown, and for the purpose set forth.

4:. The holder hereinbefore described, made of a piece of spring-wire bent to form two substantially parallel legs or sides, each having bends therein, a short bend formed in one of said legs to serve as a stop, and having an end of the wire bent outwardly at right angles to act as a pusher, substantially as shown and set forth.

5. The holder for enamelers use, consistin g of a piece of spring-wire bent to form two curved arms, one of the arms being arranged to be secured to a base and the other or free arm having a short bend or project-ion, as 0 adapted to engage an interior groove or notch formed in the lower portion of the bobbin, and, further, having the free end of the arm bent to form a pusher, substantially as shown and set forth.

In testimony whereof I have affixed my signature in presence of two witnesses.

SAMUEL D. KEENE. Witnesses:

CHARLES HANNIGAN, GEO. H. REMINGTON. 

